2.7×0.72+7.2×0.72+0.01等于多少简便计算?
4个回答
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=0.72×(2.7+7.2)+0.01
=0.72×9.9+0.01
=0.72×(10-0.1)+0.01
=7.2-0.072+0.01
=7.2028
=0.72×9.9+0.01
=0.72×(10-0.1)+0.01
=7.2-0.072+0.01
=7.2028
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展开全部
2.7×0.72+7.2×0.72+0.01
=0.72x(2.7+7.2)+0.01
=0.72x9.9 +0.01
=0.72x10 -0.072 +0.01
=7.2 -0.062
=7.138
=0.72x(2.7+7.2)+0.01
=0.72x9.9 +0.01
=0.72x10 -0.072 +0.01
=7.2 -0.062
=7.138
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展开全部
2.7×0.72+7.2×0.72+0.01
=0.72x(2.7+7.2)+0.01
=0.72x9.9 +0.01
=0.72x10 -0.072 +0.01
=7.2 -0.062
=7.138
=0.72x(2.7+7.2)+0.01
=0.72x9.9 +0.01
=0.72x10 -0.072 +0.01
=7.2 -0.062
=7.138
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评论
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